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use std::io::{self, Read};
use byteorder::{LittleEndian, ReadBytesExt};
use crate::color::RGB64;
pub struct Packet {
pub palette_entries_to_skip: u8,
pub colors: Vec<RGB64>,
}
pub struct OldPaletteChunk11 {
pub number_of_packets: u16,
pub packets: Vec<Packet>,
}
impl OldPaletteChunk11 {
pub fn from_read<R>(read: &mut R) -> io::Result<Self>
where
R: Read,
{
let number_of_packets = read.read_u16::<LittleEndian>()?;
let mut packets = Vec::new();
for _ in 0..number_of_packets {
let palette_entries_to_skip = read.read_u8()?;
let mut number_of_colors = read.read_u8()? as usize;
if number_of_colors == 0 {
number_of_colors = 256;
}
let mut colors = Vec::with_capacity(number_of_colors);
for _ in 0..number_of_colors {
colors.push(RGB64 {
r: read.read_u8()?,
g: read.read_u8()?,
b: read.read_u8()?,
})
}
packets.push(Packet {
palette_entries_to_skip,
colors,
});
}
Ok(Self {
number_of_packets,
packets,
})
}
}